Re: [PATCH v10 0/8] Add StarFive Camera Subsystem driver

From: Jack Zhu
Date: Wed Oct 18 2023 - 05:53:16 EST



On 2023/10/18 17:31, Hans Verkuil wrote:
> On 18/10/2023 11:25, Jack Zhu wrote:
>>
>>
>> On 2023/10/18 16:50, Hans Verkuil wrote:
>>> Hi Jack,
>>>
>>> On 18/10/2023 04:37, Jack Zhu wrote:
>>>
>>> <snip>
>>>
>>>>>> --------------------------------------------------------------------------------
>>>>>> Compliance test for device /dev/v4l-subdev1:
>>>>>>
>>>>>> Driver Info:
>>>>>> Driver version : 6.6.0
>>>>>> Capabilities : 0x00000000
>>>>>
>>>>> But this does not appear for v4l-subdev1.
>>>>>
>>>>> I can't really tell why it doesn't show that. Can you debug a little bit?
>>>>> The code is in v4l2-compliance.cpp, line 1086:
>>>>>
>>>>> ent_id = mi_media_info_for_fd(media_fd, node.g_fd(), &is_invalid, &node.function);
>>>>>
>>>>> The mi_media_info_for_fd() function calls ioctl(media_fd, MEDIA_IOC_DEVICE_INFO, &mdinfo),
>>>>> and that fails for some reason. It could be that media_fd is invalid (would be weird).
>>>>>
>>>>> This could well be a v4l2-compliance bug that you hit with this driver.
>>>>>
>>>>
>>>> On the test board, /dev/v4l-subdev1 is imx219, and the corresponding directory is
>>>> /sys/dev/char/81:3/device. Media0 does not exist in this directory. Therefore, the media_fd
>>>> obtained through mi_get_media_fd(node.g_fd(), node.bus_info) is invalid.
>>>>
>>>> I don't know why media0 does not exist in /sys/dev/char/81:3/device?
>>>>
>>>
>>> Can you try again with this v4l2-compliance patch?
>>>
>>> I need to dig a bit deeper as to why media0 is missing, but for now try this.
>>>
>>> Regards,
>>>
>>> Hans
>>>
>>> diff --git a/utils/v4l2-compliance/v4l2-compliance.cpp b/utils/v4l2-compliance/v4l2-compliance.cpp
>>> index 7169eefe..29475d6b 100644
>>> --- a/utils/v4l2-compliance/v4l2-compliance.cpp
>>> +++ b/utils/v4l2-compliance/v4l2-compliance.cpp
>>> @@ -968,7 +968,7 @@ err:
>>> }
>>>
>>> void testNode(struct node &node, struct node &node_m2m_cap, struct node &expbuf_node, media_type type,
>>> - unsigned frame_count, unsigned all_fmt_frame_count)
>>> + unsigned frame_count, unsigned all_fmt_frame_count, int parent_media_fd)
>>> {
>>> struct node node2;
>>> struct v4l2_capability vcap = {};
>>> @@ -997,8 +997,12 @@ void testNode(struct node &node, struct node &node_m2m_cap, struct node &expbuf_
>>> memset(&vcap, 0, sizeof(vcap));
>>> }
>>>
>>> - if (!node.is_media())
>>> - media_fd = mi_get_media_fd(node.g_fd(), node.bus_info);
>>> + if (!node.is_media()) {
>>> + if (parent_media_fd >= 0)
>>> + media_fd = parent_media_fd;
>>> + else
>>> + media_fd = mi_get_media_fd(node.g_fd(), node.bus_info);
>>> + }
>>>
>>> int fd = node.is_media() ? node.g_fd() : media_fd;
>>> if (fd >= 0) {
>>> diff --git a/utils/v4l2-compliance/v4l2-compliance.h b/utils/v4l2-compliance/v4l2-compliance.h
>>> index 7caf254b..c47f25f5 100644
>>> --- a/utils/v4l2-compliance/v4l2-compliance.h
>>> +++ b/utils/v4l2-compliance/v4l2-compliance.h
>>> @@ -308,7 +308,7 @@ int check_ustring(const __u8 *s, int len);
>>> int check_0(const void *p, int len);
>>> int restoreFormat(struct node *node);
>>> void testNode(struct node &node, struct node &node_m2m_cap, struct node &expbuf_node, media_type type,
>>> - unsigned frame_count, unsigned all_fmt_frame_count);
>>> + unsigned frame_count, unsigned all_fmt_frame_count, int parent_media_fd = -1);
>>> std::string stream_from(const std::string &pixelformat, bool &use_hdr);
>>>
>>> // Media Controller ioctl tests
>>>
>>
>> From the log, there is no change.
>
> Oops, my mistake. Also apply this change:
>
> diff --git a/utils/v4l2-compliance/v4l2-test-media.cpp b/utils/v4l2-compliance/v4l2-test-media.cpp
> index 0195ac58..52ab7fb8 100644
> --- a/utils/v4l2-compliance/v4l2-test-media.cpp
> +++ b/utils/v4l2-compliance/v4l2-test-media.cpp
> @@ -612,7 +612,7 @@ void walkTopology(struct node &node, struct node &expbuf_node,
> }
>
> testNode(test_node, test_node, expbuf_node, type,
> - frame_count, all_fmt_frame_count);
> + frame_count, all_fmt_frame_count, node.g_fd());
> test_node.close();
> }
> }
>

Can see relevant Info in the log.

test log:
--------------------------------------------------------------------------------
Compliance test for starfive-camss device /dev/v4l-subdev1:

Driver Info:
Driver version : 6.6.0
Capabilities : 0x00000000
Media Driver Info:
Driver name : starfive-camss
Model : Starfive Camera Subsystem
Serial :
Bus info : platform:19840000.camss
Media version : 6.6.0
Hardware revision: 0x00000000 (0)
Driver version : 6.6.0
Interface Info:
ID : 0x0300001e
Type : V4L Sub-Device
Entity Info:
ID : 0x00000018 (24)
Name : imx219 6-0010
Function : Camera Sensor
Pad 0x01000019 : 0: Source
Link 0x0200001a: to remote pad 0x100000f of entity 'cdns_csi2rx.19800000.csi-bridge' (Video Interface Bridge): Data, Enabled, Immutable

Required ioctls:
test MC information (see 'Media Driver Info' above): OK
test VIDIOC_SUDBEV_QUERYCAP: OK
test invalid ioctls: OK

Allow for multiple opens:
test second /dev/v4l-subdev1 open: OK
test VIDIOC_SUBDEV_QUERYCAP: OK
test for unlimited opens: OK

Debug ioctls:
test VIDIOC_LOG_STATUS: OK (Not Supported)

Input ioctls:
test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
test VIDIOC_ENUMAUDIO: OK (Not Supported)
test VIDIOC_G/S/ENUMINPUT: OK (Not Supported)
test VIDIOC_G/S_AUDIO: OK (Not Supported)
Inputs: 0 Audio Inputs: 0 Tuners: 0

Output ioctls:
test VIDIOC_G/S_MODULATOR: OK (Not Supported)
test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
test VIDIOC_ENUMAUDOUT: OK (Not Supported)
test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
test VIDIOC_G/S_AUDOUT: OK (Not Supported)
Outputs: 0 Audio Outputs: 0 Modulators: 0

Input/Output configuration ioctls:
test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
test VIDIOC_G/S_EDID: OK (Not Supported)

Sub-Device ioctls (Source Pad 0):
Try Stream 0
test Try VIDIOC_SUBDEV_ENUM_MBUS_CODE/FRAME_SIZE/FRAME_INTERVAL: OK
test Try VIDIOC_SUBDEV_G/S_FMT: OK
warn: ../utils/v4l2-compliance/v4l2-test-subdevs.cpp(541): VIDIOC_SUBDEV_G_SELECTION is supported for target 0 but not VIDIOC_SUBDEV_S_SELECTION
test Try VIDIOC_SUBDEV_G/S_SELECTION/CROP: OK
Active Stream 0
test Active VIDIOC_SUBDEV_ENUM_MBUS_CODE/FRAME_SIZE/FRAME_INTERVAL: OK
test Active VIDIOC_SUBDEV_G/S_FMT: OK
warn: ../utils/v4l2-compliance/v4l2-test-subdevs.cpp(541): VIDIOC_SUBDEV_G_SELECTION is supported for target 0 but not VIDIOC_SUBDEV_S_SELECTION
test Active VIDIOC_SUBDEV_G/S_SELECTION/CROP: OK
test VIDIOC_SUBDEV_G/S_FRAME_INTERVAL: OK (Not Supported)

Control ioctls:
test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
test VIDIOC_QUERYCTRL: OK
test VIDIOC_G/S_CTRL: OK
test VIDIOC_G/S/TRY_EXT_CTRLS: OK
test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
Standard Controls: 20 Private Controls: 0

Format ioctls:
test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK (Not Supported)
test VIDIOC_G/S_PARM: OK (Not Supported)
test VIDIOC_G_FBUF: OK (Not Supported)
test VIDIOC_G_FMT: OK (Not Supported)
test VIDIOC_TRY_FMT: OK (Not Supported)
test VIDIOC_S_FMT: OK (Not Supported)
test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
test Cropping: OK (Not Supported)
test Composing: OK (Not Supported)
test Scaling: OK (Not Supported)

Codec ioctls:
test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
test VIDIOC_G_ENC_INDEX: OK (Not Supported)
test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)

Buffer ioctls:
test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK (Not Supported)
test VIDIOC_EXPBUF: OK (Not Supported)
test Requests: OK (Not Supported)

Total for starfive-camss device /dev/v4l-subdev1: 51, Succeeded: 51, Failed: 0, Warnings: 2

Grand Total for starfive-camss device /dev/media0: 209, Succeeded: 209, Failed: 0, Warnings: 2
#

--
Regards,

Jack Zhu